I have 2 functions: one has to calculate the total number of days spent on a trip and the other has to calcualte the time of departure on the first day of the trip and the arrival back home on the last day of the trip. In the first function, don you calculate the total number of days just by cin and return to that function? Im totally lost on how to calculate the time of departure on the first day....i'm thinking that there is some type of pre-processor directive for the date and time but I cant think of it...can anyone offer any suggestions?